D/C from games, on both old & new comp. Partner next to me does not.

Was hoping someone could help me find out whats going on.

Both me and my partner play games online. I always had a problem with my old computer disconnecting from games every hour or so and thought it was just a old hardware fault but somehow even with my completely new computer nothing has changed.

I still d/c every hour, sometimes 2 hours while my partner does not. My old computer used to do this, and now my all new computer still does!
I thought it might be one of the connections on my router but I have tried all connections and have swapped my network cable with my girlfriends but nothing changed, I still get d/c, she does not. I would say it is my router(a rubbish siemens one given by our isp), but then how come my partners computer is fine?

As far as I know settings on both our computers are the same.


Maybe someone here has heard of a similar problem or knows what may cause this

Any help will be much appreciated.